Could you please describe your application: 6-B 9na 1, is the emitting source single mode or multimode? what are the parameters i.e. divergence, waist, ... q_ %cbAcD 2, is the fiber single mode or multimode? what is the NA, core dia,... Gih[i\%Q -I":Z2.fR Generally, fiber coupling efficiency of 40%~90% is reasonable. ahJ1n< k;I &.H Again let us know your specific bug. n-o3 eWvo,4 MANG2004 HRB[GP+